Take-up for roller bearings



@CL 8, E946. I |'|,'F WRIGHT 2,408,899

` TAKE-UP RoR ROLLER BEARINGS Filed March 5, 1945 2 Sheets-Sheet l f; E E GM@ le W /6 WJ n @03 19 @j a@ 30 ZZ .A9 22 nventor @attorney Oct. 8,' 3946.

H. F. WRIGHT TAKE-UP FOR ROLLER BEARINGS Filed March 5, 1945 rwentor Ham Wggzzf 4 www@ agg/@ (Ittornegs Patented Oct. 8, 1946 UNITED STATES' PATIENT orf/FICE? TAKE-AUP- FBR" ROLLER BEARINGS HalF. Wright, Lisbon, Ohio, assignonto .Chester Manufacturingompany, Lisbon, Ohio, a firm composed 'of Hal F. Wright and MaryT. Wright ApplicationMarch 5, 1945, Serial No. 581,124

4,Claims. 1.

The invention rela-tes to Amea-ns for takingwup play in tapered roller [bearings and is .adapted for use in pulleys, wheels, sprockets or other rotatable 'members mounted upon an axle or shaft with tapered roller bearings interposed therebetween.

Thelobject of lthe invention is to provide means whereby the axle or shaft .may beadjusted longitudinally to take up play in the rol-ler bearings without any change in relative positions tof parts of the frame or other support in which the rotata-ble members are mounted.

Another object is to providev a roller vbearing take-up of this character in which the sprocket or other rotatable member is provided with an internal annular rib againstA which the ends of the roller bearing cups abut.

A further object of the invention is the provision of such a roller bearing take-'up in which the aXle or shait is providedatone end with a head fitting within a correspondinglyshaped opening in the frame or supporting member so that the'axle or shaft may be adjusted longitudinally within the frame or supporting member without moving'any part thereof.

A still further obj ect is to provide a roller bearing take-up Vof this character in'which spaced rollerbearing cones are -mounted upon the axle or shaft, one cone Yabutting against the frame or supporting member and the other cone abutting against the head .or shoulder on the shaft, the cups of the'roller bearings being mounted in the sprocket or otherrotatable member and abutting against an internal annular rib therein, a nut being provided upon the other end of the axle or shaft for longitudinally adjusting itwithin^the :frameor supporting member to take up play in the roller bearings.

Another object of the invention is to provide aroller bearing take-up of this character in which twonor. more roller bearing mounted ywheels lor other rotatable members may be mounted'upon a shaft or axle, and play in all of the bearings may bel simultaneously taken up by longitudinal adjustment of the shaft or axle.

A further object is to provide a roller bearing take-up of this character especially adapted for taking up play in tapered roller bearings within the sprocket wheels of a chain hoist.

The above objects together with others which will be apparent from the drawings and following description, or which may be later referred to, may be attained by constructing the improved roller bearing take-up in the manner illustrated in the accompanying drawings, in which:

Figure 1 isla side elevation of thefloadLsprocket of a chain hoist;

Fig. 2 a vertical, transverse sectional :View therethrough showing the improved rollerbearng take-up as applied to the roller ,bearings .of a single sprocket wheel;

Fig. 3 a fragmentary 4verticalitransversesectional view through adual sprocketprovided the improved roller bearing take-anp, andA Fig. 4 a side elevation of a iormof :chain fhoist towhich the invention may be applied.

Although the .invention may "be applied to.y any mechanism in which a wheel; pulley,v sprocket .sor other rotatable member is rjournalled upon 4a. shaft or axle by means of tapered roller bearingsyfor 'the purpose of illustration the improVed'take-up is ishown as. applied to the sprockets'in'afchain hoist.

In Fig. 4 is shown one type of vchain 'hoist' to which the invention is applicable and which oomprises the upper yoke iD' having the hook vIl for suspending the hoist from a stationaryor movable support, the upper sprocket l2 and' the hand wheel I3 being journalled upon: said yoke.

The .usual hand chain I4 is yshown associated with the hand wheel i3 and the usual load carrying chain l5 is shown associated with the upper sprocket l2, and the load sprocket "I6, which-is mounted in the frame I1 inthe Alowerfend of which is swiveled the load'carryingfhook IB.

The sprocket I6 is rotatably mounted uponthe axle or shaft i9 by means of tapered roller'bearings comprising the cups `2li Amountedwithin-the Asprocket and separated yby the internal annular rib 2| therein, andthe cones 22 mounted'upon the shaft or axle I9, the usual tapered rollers 23 being interposed 'between the Cupsiand cones of the bearings.

The frame or bracket Il "is formed of two similar members indicated at `a and b respectively, connected in spaced relation at their lower ends by means of the stub shaft,24.through which ,the lower `hook I8 is swiveled and connectedsattheir upper ends to the clevis 25 by means of a bolt 26.

In order to take up play in the tapered roller bearings without disturbing the relative positions of the frame members a and b the shaft or axle I9 is provided at one end with a head or shouldered portion 21 fitting within a correspondingly shaped opening 28 in the frame member a, the other end of the shaft or axle being screw threaded as at 29 and provided with a nut 30 to be tightened against the outer side of the frame member b, a lock washer 3| being preferably in- 3 terposed between the nut and the frame member b.

If desired a washer 32 may be interposed between the inner side of the frame member b and the adjacent shearing cone 221, and a, similar Washer 33 may be interposed between the head 21 of the shaft or axle and the other cone 22.

From the above it will be seen that in order to take up any play in the tapered roller bearings the nut 30 may be tightened upon the shaft or axle I9, the head 21 bearing against the adjacent cone 22, taking up any play in that bearing, and through the rollers in that bearing and the cone 20 thereof, bearing against the internal rib 2l of the sprocket I6, said sprocket will be moved slightly to the right and the cup 2D of the right hand bearing as viewed in Fig. 2 is thus moved relative to the cone 22 of said bearing taking up the play therein As the head 21 of the shaft or wheel slides within the opening 28 in the frame member a it will be seen that the roller bearings are properly taken up without changing the relative position of the frame members a and b.

In Fig. 3 is shown the manner in which two or more sprockets or other rotatable members may be mounted upon a single shaft or axle and play in all of the roller bearings may be simultaneously taken up by means of the same invention as above described.

In this view the frame I1 may comprise the frame members a and b and the shaft or the axle I9 is provided with a head 21' slidably tting within the opening 28 in the frame member a'.

The sprockets I6 are mounted upon the shaft or wheel by means of tapered roller bearings comprising the cones 22 upon the shaft or axle and the cups 20' within the sprockets, the tapered rollers 23 being interposed therebetween.

The nut 30' may be mounted upon the screw threaded end 29' of the shaft or axle with a lock nut 3| interposed between the nut and the outer side of the frame member b', and a washer 32' may be interposed between the inner side of the frame member b and the adjacent cone 22', while a washer 33' may be interposed between the inner surface of the frame member a and the adjacent cone 22'.

With this construction, in order to take up play in the bearings, it is only necessary to tighten the nut 30', the play in the bearings of both sprockets being taken up in the same ymarmer as above described where a single sprocket is journalled upon the shaft or axle.

I claim:

1. A take-up for roller bearings including a frame comprising spaced frame members, a shaft located through said frame members and having a head upon one end, one frame member having an opening in which said head is located, the other end of the shaft being threaded and extending through an opening in the other frame member, a nut upon said threaded end of the shaft abutting the outer side of the adjacent frame member, spaced roller bearing cones mounted upon the shaft. one cone abutting the last named frame member and the other cone abutting the head upon the shaft, a rotatable member surrounding the shaft, spaced cups within the rotatable member, and rollers between the cups and cones.

2. A take-up for roller bearings including a frame comprising spaced frame members, a shaft located through said frame members and having a head upon one end, one frame member having an opening in which said head is located, the other end of the shaft being threaded and extending through an opening in the other frame member, a nut upon said threaded end of the shaft abutting the outer side of the adjacent frame member, spaced roller bearing cones mounted upon the shaft, one cone abutting the last named frame member and the other cone abutting the head upon the shaft, a rotatable member surrounding the shaft, an internal rib in the rotatable member, spaced cups within the rotatable member abutting opposite sides of said rib and rollers between the cups and cones.

3. A take-up for roller bearings including a frame comprising spaced frame members, a shaft located through said frame members and having a head upon one end, one frame member having an opening in which said head is located, the other end of the shaft being threaded and extending through an opening in the other frame member, a nut upon said threaded end of the shaft abutting the outer side of the adjacent frame member, spaced pairs of roller bearin cones mounted upon the shaft, the innermost cone of each pair abutting the adjacent cone of the adjacent pair, one outermost cone abutting the last named frame member and another outermost cone abutting said head, a rotatable member surrounding each spaced pair of cones, spaced cups within the rotatable members and rollers between the cups and cones.

4. A take-up for roller bearings including a frame comprising spaced frame members, a shaft located through said frame members and having a head upon one end, one frame member having an opening in which said head is located, the other end of the shaft :being threaded and extending through an opening in the other frame member, a, nut upon said threaded end of the shaft abutting the outer side of the adjacent frame member, spaced pairs of roller bearing cones mounted upon the shaft, the innermost cone of each pair abutting the adjacent cone of the adjacent pair, one outermost cone abutting the last named frame member and another outermost cone abutting said head, a rotatable member surrounding each spaced pair of cones, an internal rib in each rotatable member, spaced cups within the rotatable members abutting opposite sides of said ribs and rollers between the cups and cones.

HAL F. WRIGHT. 

